Lock-nut



L L. KURACH.

UFCK Mn,

Patented June 2, 1921c ATTORNEY 7 014 Zwlm, 6 WW Cit in s Fe warren;

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tents n Konncn, or emcneo, Emails.

noon-non.

Specification of Letters'EPatent.

l atented d'nne *T.

' Application ales Augnst as, 1919. Serial to. 319,452.

T 0 (ZZZ whom it may concern: 4

Be it known that I, 'Lonrs L. Konnon, a

plurality of sections or members which are normally orinitiallyconnected and spaced apart bylneans of connecting posts or pillars whichare adapted to be fractured or broken by the turning of either at suchsections with respect to the other, so as to cause the fractured poststo form teeth or projections located between and in engagement with theadjacent facesof the nut sections to hold the same inlocked engagementwith each other and with a threaded bolt upon and in threaded engagementwith which they are adapted to be mounted.

The principal object of this invention is to provide a simple,economical and efficient loch-nut.

Other and further objects of the invention will appear from thefollowing description and claims, and from an inspection of theaccompanying drawings, which are made a part of this specification.

' The invention consists in the features, combinations, details ofconstruction and arran 'ement of )arts herein described and claimed.

In the-accompanying drawings igure 1 is atop or plan View of a lock nutconstructed in accordance with my invention showing the same in positionupon a threaded bolt, as it would appear after either of the initiallyconnected nut sections had been turned upon its axis with respect to theother to or in the direction of locking position;

Fig. 2 is a View in side elevation of the nut members shown in Fig". 1,showing the same in threaded engagement with a bolt, with the outersection turned with respect to the inner section sufficiently tofracture the connecting posts or pillars located between the main nutsections, and with the inner section in engagement with a plate or partto be held in place thereby;

Fig. 3, is a View in side elevation of the parts shown in Figs. 1 and 2,showing: the

upper or outer nut section in the position which it would occupy afterhaving been turned with respect to the lower or inner nut section intoposition to cause the connecting poststo be fractured and converted intoteeth and pressed into engagement with the adjacent surfaces of the nutsections so as to lock the sections in engagement with each. other andin engagement with the threaded bolt on which they ar mounted;

Fig. 4, is an enlarged YlQW. in central vertical section, taken on linei of 3, looking in the direction of the arrow' and showing the lock-nutmembers in locking position, with the intermediate connecting posts orpillars fractured and converted into teeth by turning one of the nutsections with respect to the other while in threaded engagement with abolt;

Fig. 5,, is a view in central longitudinal section of a lock nutconstructed in accorcance with my invention, showingthe same as it wouldappear initially with the nut sections spaced apart and connected bymeans of integral connecting posts or pillars which are frangible andadapted to be broken by turning one of the nut sections with respect tothe other while in threaded engagement with a bolt; and

6, is a View in transverse section taken on line of Fig. 5 looking indirection indicated by the arrows.

in constructing a lock nut in accordance with my invention, I provide anut body which. comprises a plurality of sections 1, and 2. which arenormally spaced apart and connected in rigid relation to each other bymeans of a plurality of connecting posts or pillars 3. of which there.are, by preference. three. said connecting posts or pillars beingspacedapart or located at equal distances from each other circumferentiallyoff the nut and at equal distances from the axial center of the nut.These manner-ting pillars are, by preference, integral with the nutsections which are connected thereby. or between which they are located,l are formed by milling or cutting or ()tJQI'WlSQ- forming a peripheralor transverse groove 4- between the sections 1 and 2 of the nut. And itis between the nut sections 1 and 2 and in this grow-e it it theconnecting are located as shown in pillars or posts 3 the drawings.

The nut body is PIOVHlQA'l, with a screwthreaded axial bore or opening'7, the helical jury. in my iinpi'o-vec' Rock or screw tbneazis 8 ofwhich at 1 b pcefei: ence, oi imiform pitch one aZiImEfiSlOIESco-niinuoiis from one co end. of each secion of the me body andtin'oiigbonctbe ieng'n of she connecting posts or imi's 3, die innersicie's of which are iikewise iieiiceiij; threedeci, one heiicziithreads 8 being broken or intei'mpteci oniy pciini-s between theconnecting posts on piiier's 3, in f the groove The iiEEQFJiQCiport-ions e connecting 9653mis indicated by the reference miniemi 1 1..I, Q. {pee a.)

in {be which i s inventionfeiates, i; Weii imon'n tbec iceziiieci boitwhen \JI'GPQI'RY giro' iontionezi, ezwis of sniicie strength of such"Lenin and; (ii- Inensions. ssto witiis any stiesses s strains which theboit Yr ointeiistorceei oi iJEOi'QH, anti ab;

nnt noes to be oseci on snob boit s ii-ave threads zinc a nut foodeither in one or more nut sect-ions oi siiifioiene fitinglil hstenci anystresses an? strains co iciifne boit can be subjected winoiit innotnrefei to the boii -conipiising pinra t r of nut-sections i ancil 2 6isebsi-antia I or ep iroxinm eiy such form dimensions as wiii ei 1e torezgniienients above me; ioneci, but wi-thoe it any iarger man isfoiinci necessar in OfCiGi to enabie it to o e-mi e anci perform itsfunctions in an efiicien', manner. Ami the connecting p0 3, which bynrefez'ence made by cuisine; swziy file materizzi of the biani; or notbody origineiiy iofineiebetween, afier forming the threeis 8 throughoutthe eniire length the blank or nut boy as a whole and throughout thelength of the posts or piiizin's.a-re of such dimensions incross-section as to be i'eadiiy broken by the turning of either of thenut-sections 1 or 2 with respect to the other wbiie upon and in threadedengagement with a bolt, and Without distorting or injuring the threadsof either the nuts or the boit. The posis 3 are, in practice, thusbroken by the turning" of the outer mo; member 1 with respect to oneinner nut member 2 While the nut sections are in threaded engagementwith a. bolt, thereby converting" each post 3 into a pair of opposedteeth each having a rough end surface formed Where the free-cure isproduced. The turning of the cute;- nut member with respect to the innernu znen'ibei, whereby the connecting posts are fractured, is continued,thereby causing the rough surfaced and rough eciged teeth iocziiecibetween the nut-sections m be pressed "'gzbtiy and with glean force intotieiitiy fining biting fric- .io be se-cnrei v iieid in vincross-section is through the some The connecting nests bezoie sein oasesi a n v o n'eierence, o iess ieinge- A s neciion oei'aiiei mm ceniez' oie zen e are Wice their siioitest (5L T by preference,

1 in cross-section. can;

1 i. Qiuthe engsgenien i wi -i die 2.

faces of nu; sections snci cause the Est-1e? iocking engagement witheach miner and with the ;se

no 5s being ng'ioie, are time be oronenv: .2 is

ii)??? GEE-101 O the nun oi bolt. inci en parts are inns brought intoZoe-ki g eng'eg :55, it is that one :1 sections bole coact in snob e Licbe outer surface 16 fne thread of fine no; sec'cion 1 is fosceciageinganai iieici in tight engagement wine the irner surface 11 of boithr ad, and 'iiie surface 12 of be since-mi oi the inner r seciion 2 isforce's"; agaii The connecmng posts 3 dimensions and consiiiuc zion11151 so arranged, that they wiii serve to connect anci hold the nutsections 1 anci 2 spaced opal? and in rigid relation during bendiing andtransportation, and to gnicie an outer nut; member onto the threaciecibolt in such a manner time the threads of been nut members wiii properlyengage fine threads of the boii'z, but should be capable of beingreadily broken in the manner above described, when the nut-sections havebeen turned "to the clesired position for breakin the posts and iockingshe nut-sections in engcgement with each 061cc and with the bolt. Ami(i0 not limit ni y'sei'f to the exact oonstrn ieeion, reinivedimensions, proportions or arrangement of pants herein (iescribeci, orshown, ofner- Wise than as seifOl'fiil in the CililTlS.

in Eigs. 2 and e, the frectureei con-- formed? necting posts, or sheteem are shown somewhat exag'gerat purpose of (-ieariy iiiustmtin f. bion and mode of operation or c ne perils. in l, 5. and 6 of the drawings,conneczing goszs are snown so c 21 one; eriangeci that the iongesciienieter cross-section of each post is disposed radieiiy the nuiz; andthe shortest diameter i,330,3@5 a, V

post substantially at right angles to the longest diameter, or at rig tangles to a radial line through the center of the post.

I claim:

1. A-lock nut comprising in its construction a plurality of nutrsectionsnormally spaced apart and each havin a screwthreaded axial openingadapted to receive and eng e a screw-threaded bolt, and a plurality 0threaded frangible connecting posts integral with and located betweenand normally connecting said nut sections, said posts being spaced apartand adapted to be broken into two sections forming opposed locking teethbetween and in frictional abutting engagement with the opposed nutsections by the turning of one of said nutsections with respect to andinto locking engagement with the other nut-section.

2. A nut lock comprising in its construe tion two nut-sections normallyspaced apart and having a screw-threaded axial opening therethroughadapted to receive and engage a screw-threaded bolt, and a plurality ofthreaded frangible connectin posts integral with and located between annormally connecting said nut sections in rigid relation to each other,said posts being inflexible and adapted to be broken by turning one ofsaid nuiasections with respect to the other, to form locking teethadapted to be forced into frictional locking engagement with adjacentfaces of said nut-sections', to hold said nut sections in lockedposition.

3., A look nut comprising in its construction two nut-sections normallyspaced apart and having a screw-threaded axial opening therethroughadapted to receive and engage a screw-threaded bolt, and a plurality ofthreaded frangible connecting posts integral with and located betweenand normally connecting said nut sections in rigid relation to eachother, each of said posts being inflexible and of less length in adirection parallel to the axis of the nut than such post is wide LOUISL. KORAOH. Witnesses:

HARRY I. CROMER,

M. Hsnm is.

